Pattern mechanism for knitting-machines.



R. W. SCOTT.

PATTERN MECHANISM FOR KNITTNG MACHINES.

APPLICATION FILED 1ULY25. |913.

R. W. SCOTT.

PATTERN MECHANISM FOR KNITTING MAcHzNEs,

APPLICATION FILED IULY 25| 1913.

Patented May 8, 1917.

3 SHEETS-SHEET 2 H. W. SCOTT.

PATTERN MECHANISM FOR KNITT'INGvIVIACHINES.

APPLICATION FILED JULY 25.19I3.'I

.,225,636 Patented May 8, 1917.

3 SHEETS-SHEET 3.

/////////III @ninfa n n PATTERN MECHANISTJQ ENTTINGr-MAHHES.

Specification of Letters Patent.

Patented Application filed July 25, 1913. Serial No. 7S,052.

lle it known that Lloinnz'r l?. Swing a citizen ot the YUnited States, and a resident ol Boston, in the county of Sui'olli and State ot' l zsadinsetts, have invented a certain new and useful linprovement in Pattern inleclianism "for iinittingnllachines of which the `following is a specilication.

My invention relates to means for antomatically controlling the devices of a ma chineI` which may` for instance`r be a circular independent needle stocking lniitting ina chine.

Ain object of my invention .is to provide an automatic pattern mechanism ca pable oi' an unusuallyy large number of 'functionating movements in one c vclc or repeat 07E the functional activities of the machine.

,-tnother object .is to provide an intern'iittentl'v actuated )attcrn surface for a linitting machine which shall be capable ot' actu-- ation at times and at a rate independent of the times and rates of actuation oil the devices for the normal actuation oi' said surface.

ln the accompan ving drawings,

vl `ignrc l is a left hand side elevation ol se much ol the 'trame and mechanical movement oiZ a knitting machine as is necessary to an lmdcrstanding of my invention;

ifig. i is a iront elevation partly in section on the line 2-2 oi Fig. 'L of the driving and control elements of the said machi i:

` ig. il is a develol'nnent of the cam ring or cylinder ot' a knitting machine illustrating one type of knitting cams and needle conti-.filling device witll which thc mechanism oix mv present ini'ention ma)y be usc lullf.' employed; l

lfig, i is a dmail plan partliY in section above the bed plate ol" the head of a knitting machine having thc devices illustrated in Figs. ii and 2L showing the relation of .the needle controlling devices to the connections from the pattern mechanism;

Fig. 5 is a detail side elevation showing the mounting lor the supplemental cams and parts of theconnection to thc pattern devices;

Fig. (l is a vertical (3 5 et Fig. 2;

lig. 7 is a diagram illustrating one relation ot the auxiliaryY racking am to the le'nitfing c vlinder and the needles therein.

section on the line As usuali)7 constructed. circular stocking knitting machines, when ol the independent needle type employing latch or beard needles held to move in grooves on the surface et a needle-cylinder, are designee to cause the coperation of the needles, the

l b v back and forth movements of the rotary elementof the knitting couple er hea-d. and cooperating needle controlling devices.

stocking liiiitting machine, if wholly automatic, may comprise such means and means for predetermining the extent of the rotar)Y operation of the knitting' head; means to predetermine the Shift of the movement of the knitting head trom rotation to oscillation (including preferablj,7 means te alter the speed of the machine at or before such change) g n'reans to determine the placing out o'lt action ot the needles which do not par take oi' the knitting' oli the pocket for the heel or toc; nrans for knitting a heel bv first narrowing bv placing seine of the remaining needles out of action successively; means for widening b v returning fertain ot the needles to action: means for thereafter resuming circular knitting 'for a predctei-mined number et courses; or extent of fabric for the foot; means to repeat narrowing and xvidenino` operations in the same order as for the heel te produce a toe. and means for thereafter stopping the machine or casting the -fabric from the needles` or beginning 'the circular operation again for the leg of another stocking attached to the toe oi the one justknit. For manv purposes these operations ma?.v be acconnmnied in a prei'leterinined order b v alteration in the length o'l' the loops knit and b v chang s at predetermined times ot' the yarn supplied. and bv such auxiliary activities as the adjustment ci the tension upon the yarn. the adjustment of the. tension upon the forming web. the local alteration of the stitch length, or the local splicing of lili? the fabric by the addition of another yarn, it may be for only a part of the circle of needles. Other operations may be automatically performed, at the proper time to cause their effect at the proper place in the article of manufacture, as will be apparent presently. I have chosen to illustrate my present devices in connection with a machinel having devices for reaching all of the above functions, but I have shown only so much'of said machine as is necessary to the full disclosure of my present new devices, the said machine being of the type shown and claimed in my Letters Patent No. 1,152,850 dated Sept. 7, 1915, p July 27, 1915, but it Will be understood that my present devices are applicable to any automatic knitting machine having a driven pattern surface.

The needle cylinder 260, gears, 30, 31,ma1n

I shaft 32 mounted on a suitableJ bed D and the drum 90 lthe shaft frame A, B, and the means 49, 65, 61, 7 O for oscillating sector 75, gear 35 and main shaft 32 may be of my patented orany usual construction, the machine also comprising the pattern shaft actuated attimes to cause cams fixed upon it tocoact with the control devices, including the belt shipper 100 and clutch shifter 92, to stop or change the speedjof the machine and tochange the motion of the knitting head from rotation to oscillation.

For the former purpose the cam disk 102 having suitable cams 104 acts upon a'lu 114 on the belt against the face -of said Acam disk by.I a spring 110. y

The cam drum 90 fixed on. the shaft 8O carries cams which coact- With the follower 89 on the slide 92, to shift the clutch collar33.

The sector 7 5 carries a crank arm 78 slotted to receive for adjustment a crank pin 77 for a reciprocating actuator, such as the paWl 82, coperating with a rack Wheel 81 fast on 80.' Said sector also carries crank pin 88 for a pavvl 87 taking into the teeth of Athe ratchet 88 free on the shaft 80, which ratchet 86 is attached to land operates a priw mary pattern surface, shown as a sprocket 84 carrying a mutablelink endless pattern chain 85. Journaled on the rod 93 fastto the frame B is a pavvl controller 83 having a chain-reading lug 83%. and an'integral attachment 83c standing between the faces of the rack Wheel 81. Said pawl controller attachment 83c determines by its position .der the influence of spring 8/1 and lugs 85 etc., of different heights on'the right-ha faces of certain links of said pattern chain, the extent of the engagement of the active toe of pawl 82 With the rack Wheel 81.

Said rack Wheel is'provided with teeth of and No. 1,148,055 dated.

.ciated mechanism 1 larly represent the beginning shipper slide 100, held` performed by the machine.

inines the extent of such movement.

, pattern surface arran a predetermined and-irregular pitch in such an order as to enable the pawl 82 to nd a tooth at or after the beginning of its vconstant but adjustable stroke as determined'by the position of the pawl controller attachment 83C, the effective length of stroke thus being under the control of the lugs 851, 852,

of the parts of the various camsnecessarily' prevent the ppsgiven a long movement, to sibility of leaving the camshaft in an improper position. 'The clutchshifting cams on the drum 90, for instance, and the asso- -for controlling the heel and toe knitting devices, require such a comparatively large angular movement of the shaft 80, and long teeth 81a and 81b are'provided on the Wheel 81 tern shaft and appurtenances respectively at the' beginning of the heel and the beginning of the foot. Long teeth 81c of the toe and the end thereof. The rate at which theshaft 80 moves under the inuence of the paWl 82 is a constant rate of one advance for each revolution ofthe crank shaft 55 and complete oscillation of the sector 75.

j The shaft 80 direct-ly the times of the various operations The pattern chain 85 determines'when any movement of said shaft shall take place, While the rack Wheel 81 in coperation with the lugs of the pattern chain and pawl controller detere'vident that the cycle of operations is' repeated after one comp/1ste revolution 0f said.-

cam shaft 80. l v Certain pf the various agencies at the for moving the pat.

thus controls or determines' It isl and 81d simil knitting `head coacting With the movable 1 element thereof .to actuate` the needles to knlt maybe adjusted at predetermined times by a Imain pattern surfaeederiving its motions fromxthe cam 'shaft 80. Said shaft projects at the left hand side as shown in Figs. 1 and -2 to'receive the gear 122 xedly,

mounted on said shaft, for instance by aV pin 200 through bores in an elongated hub 201 and said shaft. Said gear122ineshes With the gear 123 journaled on# a 'stud- 124 projecting from they left frameB, Whichjgeai', in turn meshes with the gearf 121' the gear 122, Whichvis 'attached` j drum journaled 105D," he projecting er'i'd of the sector shafti A ams removalolyai-y chedgt the urface iinilar to.. ,to .a cam of said pattern drum" constitute a' movable A gedl 'to contact with and actuate members' of aseries of thrust hars le() guided at their lower ends in a` eonih ll attached to a stud (l parallel with the shaft 76 projecting from the end frame which thrust hars at their upper ends engage the instrumentalities cooperatingr with the needles for effecting Changes in the knitting, auch for instance as the yarn changing yarn guides, a yarn clamp and Cutter, a yarn talieaip deviee,'a devia for closing the yarn-feed-lever gap in the latch ring, ani deriws for locally altering the. length oil the cli and for splicing a section of `the `init tuhe, Said construct-ions may he the saine as those in nl); said patents. Jams on drinn 120 may a so he employed to coaet at he proper times with adjustable plungers 2; 251 jor naled ou the Stud r50, one arm of said lever taking under a lng' on a tuhular column :Zoll upon which a rotary support or supports vT'or the needle cylinder may find in order 'to autoniatically adjust ,alle eylinder with respect to cani ringiz Canis on iid i rum i530 may also he employed to cooperate with-the lever Ql journaled on the stud 'i724 to lift the rofl 216 to operate some ol' the instrui'nents concerned with the knitting function, 'for instance to control switch cani for lifting! the, needles rendered idle when knitting the heel and loe, and for operating the widening picker,

'to determine when it shall he active lt will he undorstfmd that the pattern Canis *n suraee o'i the drum l2() and elio :i ahorc, sugl- "ily lypiral ol automatirally niting devices, which may well adliustahle he those ol the prior art, and that have illustrated the drum lill and 1he reading or indicator men'ihers inll, 2S?) and Q15 merely as instances ot devices which might he replaced hj.' any usual or known arrangement for automaticalllxr operating the knitting derls proper. ll', will he clear, lion ever, that die limes at and extent to which the Various devices reached hlx' said connections will hc moved will he determined hy the movements ol' the shalt H0. aai'isiiiil'led to said drum i120 through ille gearingy 122, 1:22, and 152i, and that lhc ioints in 'the tahric t which the changes caused hy indications on said drum l2() occur will he determined in the first instance hy the position of the lugs S52, S53., etc., ou the primary pattern surface or pattern chain S5.

The pattern rhain S5 may he of any neeessar)v lengllli and supported in any manner known in the art, hut whatever particular device is employed i'or this purpose will permit alteration ot' the said chain. as hy removing and replacing links,y to enahle the adjustment of position in the 'fabric of the knit structures controlled hy the pattern .l :fari ed hy a two-armed lever the stitoh, hy eleratiiig' or lowsurface of the drum 120, and also with respect to the -time in the operation of the changes controlled by the drum 90 and the cam 102.

TWhen it is desired to perform any special. or unusual operation upon the inaehine, to be repeated, for instance at least once in each complete article made, it will with the describedconnections he necessary to provide upon the drum 120 a cam to more one of the described connections, for instance one ot the thrust hars (50, at a time corresponding to `the desired place in the fabric, and in a manner to Cooperate with the special instrumentality to cause it to perform its operative cycle. Ent, referring now to Fig. (l, it 'will he apparent that the necessary' operations of the machine consume a large part oi' the one revolution o the shalt 8() which may he devoted to a single article, the operations for instance of knitting the heel, foot and toe of a stocking ordinarilyv haii 'the surface ot the drum, requiring all of 'the teeth hetween 8l" and 8l, and a Corresponding movement oi the drum lill). luto the remainder o the surface oic the drum, if a stocking" is to he knit, must he crowded all of the indications for special operations intervening` hetween the toe of one stockingl and the, heel oi" the .next stocking. :l special operation duirinp; a segment olf the drinn surface corre- .spending` in extent to one oi the 'teeth Sla,

Si, et` *may usuallwY he provid/ed for onlyr hy shorteningz` the movement oi' the drum devoted to other purposes oecurringiduring the same interval, thus increasing` Jthe required acruraojv' oi the parts, and when the special operation attempted to he arried out upon the niaehine neeessil'ates anyY acourate positioning. for insanee as of s 'eeial needle canis,`wiih respect to the moving needle cylinder. reliance upon indications moving with the shaft 8O may limit or prevent the use oll the machine for all of the desired purposes.

ll is mechauicallf.v desirable to drive the drum '120. the shall' S0 and its` attachments al a comparairelj\v slow ralc. ln the instaure shown in the drawings suen ralie is provided for hv the described construction in which thc actuator 'For the shalt S() is ihopawl Sl which makes one forward motion during,r cach revolution oi the gears (l0 and (35 and the shaft 5f, which lgears and shaft rotate at a reduced rate with respect to the shaft 32 and the knitting;a head; for instance, when the holt is on the puller p2. and shalt is driven through pinion l!) and gear (3:1 which is the normal condition during` rotaryY knitting'. 'lhc gear (30` if the, proportions are as shown` will then make one revolution for every four revolutions ol said puller: while if the heli; is upon the pulleyY y1 and the drive through the pinion 38 and the clutch collarl It will be seen that a control device or pattern mechanism operatively connected to any ot the instrumentalities in amachine such as above indicated, or containing knitting devices of a. related character, Will necessarily be `associated with a positioning mechanism such asV the said'shaft 80, in

order broadly tov determine the time at which the changesto be effected in the knitting will take place. AThis association, when it is a rigid' connect1on, produces the diliculties above mentioned as mere inits connecting train oil mec stances of others whichwill be apparent to.. those skilled in theart.V By my present invention I have provided, YWhile retaining the shaft z8O and vmeans associated With it for determining the time at W`hich the operations will take place, a special type of pattern drum, or surface, so'mounted that it may be moved Whenvthe 'haft 80 and p l anism is at rest and still capable of being actuated by said shaft to bring. it into time with the remaining indications. v Y i As one vinstance merely, I will now describe the construction and operations of said auxiliary surface and the connections from it When employed for operating special cams for making drop stitch barriers, or stop structures, starting selvages and out-turned Welts. In my saidLetters Patent No. 1,148,055, I 'have describedv and claimed needle controlling devicesguseful for these purposes, said devices ccy prising in one form the special cams and knitting camsv illustrated in Fig3 of-thisapplication, including symmetrically paired stitch cams 6 and/ 7 havingneedle .fretracting slopes cooperating with the butts of the needles n and n? to give them their stitch-'torming movement, needle advancing slopes G and 7n to elevate the needles to cause them to clear their latches, in coperation with a top center cam 8 to carry needles advanced by one ot' said inclines Ga or 7a beneath the following stitch cam 6 or 7, and the bottom center cam 9 coperating With said top center cam 8, and so placed as to provide an idle groove 10 too low to permit needles enteringI it to contact with the yarn supplied by yarn guides (not shown) at the region of the cam 8.-

The. above structuresvv coperate- With a cam'ring 271 providing a cut-away' portion mamas not cleared beneath their latches, a cutaway portion l1 and a cam groove 385' for coperation with the butts of'needleectii'- ating jacks 380, 381 operating inl the'. same grooves as the' knitting/needles. I For the purposes above suggested, the said machine is also equipped Withsupplemental cams 382 and 2, constituting needle controlling devices, which canas are held to slide substantially radially With'respeet 6 to the needle cylinder in grooved standards 490 and 18 forming part ci the bracket 192 attached to the bed plate D of the knitting head as by screws 22.

The normal position for saidcams 382 35 and 2 is one of retraction under the indu-ence 'respectively of the springs la andrei@f in bores in the said, standards` 490 and i8,

lplungers 13 and l-respectively in said heres taking against-the down-turned outer ends 99 12 and 15 of the said respective cams 382-. and 2. It is necessary to carry entailthc operationsl for making startingl Selvges,v Welts and 'drop stitch barriers to movegthe said cams 382 and 2 at p'redeterminedtimesv 95 to at least two positions fof adjustmentfTwin,j' advance of their outwardj position ef? In the case of the cam 2 it is desirable,ftdmove said cam atA predeterminedtinies'` 'te`v` l three positions in advance of its pemftio'n-cff 'ma' movin. past said cams, ier i tance, cir first o the usual series ot hi butt n following the usual ci' lc.

needles a?.

It will be understand trated the knitting mechanism the cams 382 and 2 merely as an in devices with which. my new pattern are particularly useful, and that said deare well adapted to the control of other i cillary parts reqiiiiring Ato be moved in a simple or complex order at predetermined times in cordination with the automatic movements cf a knitting'machine of the illustrated or any/:known type. A

Onvthe left end of the pattern shaft 80, and-journaled on the elongated jhub 201 of i the `gear5122, I provide the auxiliary pattern 130 I -ti ation oi scribed the surface of the drinn .220 iS available for Canis to he used for the timely ae-l L the indicator levers or adjusting connections, with sncli advantage as vuil aecruey from the provision of an addjonal surface Yfor pattern Caine, such as those on the drinn 120.

The drive connection Q22, i'foi' the drinn. QQ is unidirectional, permitting the dran; QQ() to be moved by exterior operating means 1with respect te its hearing shaft BFL ay thns utilize the saii drive connection for said drinn to position the saic drinii iii coordination with reinaining indications of the shaft 8O and its attachments anc the, dinni 120, hilt the Sinne time provide for the independent actuation of sach dences as ii controlled hy Suid drinn 220.

To ii end l Aforni ,integrally vith thy drinn 2,20 a ratchet 226 'for cooperation .if'ith. a paivl 22T carried 'by one arin ot a tvro armed ie'v'er -i281 joninaled on the rod 93j which lever is given a rocking movement vvnli respect to the rod as a centr liy the cani i130 Yfastened on the main shaft Si near the gear rEhe lever 228 kept agains" the snrliace of the cani 230 by a spring The active toe ot the pawl Q27 is i'iormallijv forced into contact Vith the ratchet Q26 by a light spring 230 seated in shallow hores in said pavvl and in lng Q3 projectiiii from the lever i228, Said paivl pivoted at 232 and provided with a projection behind the pivot carrying' a pin. 233.

The are swept by the pivot 232 and the pavvl conigaiatively short7 and che travel ot the pin Q33 normally takes place in engagement with the onder side of' a pawl controlling arni 133:3 ot alever 23V nio iectinfI tlirongh an opening 7) in the traine E which lever is `ionrnalcnl inside of Ydie trames ot the machine on an internal projection of the stud Ml, and is under the stress of conipai'atirely strong spring 5213 ln this position the active toe of the pawl. 227 does not engage the ratchet 296. Said paivh' hoivevei; may he dropped into enn gage nent with the ratchet at predetermined times by the intervention of a lng S54: on the le'l't hand side of a link. or links of the pattern chain 85, which` lng coacts with a chain reading hi-f on said lever Q36,

JLt will loe evident that the dinni l he kept in time with the remaining of the n achine hy-the eoaction oi 22; and the lug Ll' tervention ot' one oi the .ings y@ primary pattern snrt'ace or nat in chain the said drinn 290 will he nniced foi'- 7ard hy its ra tcliet i525 ani, paivl i327 during sncii a time as is representwi h v the len ot the '.i Ii spring hial'ze Lllflieai .75

ratchet Ziff prevent 2120 or its' nio-veine ii' 122 or hnli LUL me dime-i "iene ai as shown i the lng 854i ina); la,

he chain readin i against the face ei" the over-throw of tl ie drinn mii ot the gear the inipiil, oi the l, ,l movements may tal fourth revolution of i rlli@ drinn 1l) may th" i three revolutions of 'the i; snoh an intermittent ron'i the configuration rThe said (rain i230, vial pini ose of actuating cams :82 and he placed. n'

"'0 so :is to bring' ll stroli'e of th 1 paivl 27 at a, t the pas. a particolar ts of the enpnleincn ii inenail speci o the shalt i i coinnci with the nsnai in' stocking; knitting niacliin lie equi-@ned wi nim l i a W lo@ neeisics if ain a, series oif' mrthn' '71,27 each occupying virtually one needle ejyliiider and l nia. cani 4:30 so as to provide tivo active surfaces,

corresiwinding to active nioveanei i the 3 @5 i, ol' paivl 22T? and two concentric or idle snrfaces, ancL a recovery incline connecting` the parts ol greatest and least radins, i nd ,la niay so place the cam e3() ivith respect to the shaft 232 as to relate the active ij iods of the pawl 22T to the passage oi' the para enla r parts of the needles past the moved by the pattern sni'i'acc on 'the drinn 222i). For instance, l have indicated by tl; diagram Fig'. 'T a cani 430 provided with ai active or inereasing?` segment Vllll7 so placed on the shaft 32 as to canse its iii/ation nasi; the lever 22% dni-ing; the passage oi the. niddlc et' the ,short l'nit't needles nl" at the 'anis 2582 and 2; a following concenti-ieportion 430 corres-ponding to the location of the following end of the short hntt needles n? and the leadingr aid oit' the long butt needles nf; an iiwreasincsegine it i300 corresponding to the angular position of the middle ot' the long hott needlesnl ancL a recoverv incline l-l0 corresponiiling to the, last ot the series of the long butt needles.

will be n that the drinn L0 nay not 4only he actuated during the idle or recovery 13@ stroke of the'pawl 82, but that the movements of the drum 220 under the impulse of 'the pawl 227 may be brought into a. rigid time relation with the passage of the particularlneedles desired to be first actuated with respect to the needle cams intended to actuate them. One cycle of operations to be carried out on the devices shown in -Fig.y

3 may, for instance, call for the positioningof the cam 382 to first encounter the leading long butt needles; then positioning said cam during the passage of the long butt needles to encounter all the needles; and thereafter positioning' the cam 2 so as to cause an advancing cam portion thereof to encounter the leadinglong butt needles, and thereafter to cause said cams 382 and 2 to retire during the passage of the long butt needles. Such an operation obviously could not be performed by the pawl 82 and cams carried by the drum 120, without actuating the drum through the maximum stroke permitted by the pawl 82, andl only in that event by the provision of accurate cam structures. Vith the Jdescribed devices pattern drum 220 maybe moved forward by the incline 43W of the cam 430 while the long butts are passing one of the operated needle cams; may then be held stationary during the passage of the leading long butts by the concentric portion 430, and may then be advanced'by -the incline 430, without having necessita-ted any period for recovery of the pavvl 227I to take a new tooth, which will not take place till the passage of the recovery incline 4301.' I may` thus provide on the drum 220 cams capable of cooperating' with connections to such needle cams as 382 and 2 without any necessity for great accuracy in their angular position with respect to the face of the drum.

As instances merely of connections capable of cooperating with such cams/as the supplemental needle cams 382 and 2, I have shown indicator levers 250 and 251 journaled on the end of the rod 93, said levers having broadened ends standing under drop rods 252 and 253 freely passing through bores in the table D, and in a bracket 254 attached to the left frame B. The upper ends of the said drop rods 252 and 253 may carry inclines 25l and 255 integral with collars 256, 257 adjustably held by setscrews on said rods. The inclines and 255 respectively take against the down-v turned ends l2 and 15 of the cams 382 and 2. The movements of the respective indicator .levers 250 and 251 will thus be translated into radial movements of the respective cams 382 and 2, as will be apparent from an inspection of Figs. 4 and 5.

Although I have described the operation of such cams as the supplemental cams 382 and 2' by theconnections leading from the drum 220 `it-vvill be obvious that the drum 220 may be utilized for the performance of many operations in connectionwith a knitting or other textile machine,A or in any situation requiring a pattern device to be actuated at predetermined times related to the general activities of an automatic machine, but for any reason inconvenient to reach by means of the main ydirecting cam, or pattern mechanism controlling' said activities. In the instance illustrated the difficulty overcome by the use of the drt/1m 220 is one iowing from the infrequency witlrwliich intermittent movements are given to the main controlling mechanism", and it will be seen that my improved devi/ces enable me to avoid `the expedients of providing a larger pattern surface, or of moving it more frequently.

While I have shown the drum 220 and its driving means in use in a machine having other pattern surfaces, it will be understood that my invention contemplates a pattern surface such as the drum 22() in use with a timing or pattern shaft such as the shaft 80, whether or not said mechanism may be combined with other pattern devices,'such as the drum 120 herein disclosed. For instance,' the device of the shaft 80 and the drum 220, and the connections from said drum and said shaft is obviously of use to obtain the proper timing of needle controlling devices in a machine organized for coniparatively few and simple changes between recurrences 0f the same structure, or one repeat of the pattern being knit.

What I claim is zl l. In a pattern mechanism, a timing or pattern shaft, a -primary pattern surface, and a pattern surface normally moved by said shaft, means controlled by said primary pattern surface to move said pattern shaft intermittently, in combination with devices independently controlled by said primary pattern surface for advancing said pattern surface with respect to said shaft at predetermined times.

2. A knitting machine having a rotary knitting element, needles, anld'hieedle controlling devices, an intermittently actuated timing or. pattern shaft, a pattern surface normally moved by said shaft, and connections from said surface to said controlling devices, in combination with devices for advancing said pattern surface with respect to said shaft at predetermined times during a predetermined part of a revolution of said rotary element only.

3. A knitting machine having a rotary knitting element, needles, and needle controlling devices, an intermittently actuated timing-or pattern shaft, a pattern surface normally moved by said shaft, and connections from said surface to said controllin devices, incombination with devices for advancing saidpattern surface with respect to said `shaft atpre'determined. times ,during prcdcicrrniiicd part of a rovoliiiori of said roary cleiiieii only7 and means `for l f ding said surface saiioiiary during subit iiiovciiici'it of said Shaft. i

.-i. il kiitiiiig iiiacliiiic having ii series of iiccdics cani-.5, mil iiccdic coiirolliiifr (cvico@ relativi-il Y i'iiovablo for liiiittiiig, a pai* `ir-,rii iiiccliiiiiiciii, a iiii'iiig or patilcrn Shaft, :i prima i 'L ci and a pattern sur- 'i'z cc iioi i l f iiccioiis Nici-cto for controlling ,Said iii-,cilci coii'roilingl devices, iii cciiibii 'on with iiicaiis coiiirolicd by siiiil priii'iary pai' n siiriacc *co iiiovc sind paliiciii siiiif incrn'iit com ji" ami rloviccfs independently coiiiroilccl j l wir ii'y paiicr; :'-aiiriiicc 'for aflvai'icii ii Hiirla cci: to sani at rcdctciiiiiiieil "iioe ing "iaSSiigD-'e of i prialclcriiiiiioii pari; ii l'cs iioczll liv i-iairl controlling device;

5;', 'i g; riiacliiiic having :gi circic of l i li' mov rola tivo ij; i Lirir said pattern it relatively iiiircoiicii iiilcrviils, iii a comi liiiiaioi xviil'i devi os coiitroiicil by Said i face for advaiiciiig said.

(S. il A* tri mccliaiiisiii coiiiprisiig :i timing or pa 'tcm shaft7 a, primary pattern surface, and :i main pattern'surfacc moi/cci by said clialft, means controlled by said priiiiaiy pattern surface to more said pattern slial'i at prode criiiiiicii timori, aii auxiliary patto 'ii siirfacc aiiil iiicaiis to cause said auxiliary aiirface iiormaliy to iiiovc cordi iiagcly wili Said shaft, iii coriibiiiatioii with devices. controlled by siii@ Qriiiiiiiy pattern Suri'aoo ifor advancing iii aiixliary pain teiii Sui-'fasc mili i ,cb io said lucana at i i ,ary patti-irri coracc, aiifil :i iiiaiii par,A ieri. Miriacy i" liv s ill siaf, iiicaiis ciiirolicil liv a il prima HU l L i v patoi'ii Sii/is'facc to move, Saiil pattern shaft iiiicrriiiticii'tly, au auxiliar)Y pattern Surface and iii'iais tg caiisc said auxiliary Surface rioriiialliv to mov@ coiiiriliiiatcly iviili said, sliaf, iii a combination wiili ilcviccs coiilrollcfl lifv Said piii'i'iary pattern :surface for advancing Said palici'n siiriacc intermittently with respect to said moans at pifcdetcrriiiriecl #aimes rcialcrl lo pioiflctci'ii i ol Said liiiitii i clciiicii 1, all

Jair@ "mcliiiic, liiiiiig clei ironic ci'iiiiiiiiig @lic op cra-tion of' Said clciiiciits coiiigilL ii, plarality of pattern siiraccs mici connections bo certain said clciiicns comprising groups of colma/cc cach 'poi ioiicnl by dilerciili orio of' iii coiiioiiiiition with 'mici of Said Soria-ccs, mi iiicaiis opci'ziizcfil incl/open i for moving ii, iii iii'ii Saiil siiaifti an mixiliary paiicrii siii on said, sii-iii iiizicr :iii

siiriacc, mi ii tciirlcfit device for said auxiliary pat'crii surface, a primary pail' i i :o cc, arid iiilcpcridciitiiicaiis cach li i iii said pri f 'y partcrn Si aco o 'iii tent@ con. ,sii actua,- iioii or said c i3 aiiri of :saifl :i

lil. .iii a. liriifi iiiacliiiic iii' ling (leviccs, primary iiriving clcrricnt a mai shaft, and moans coiiiicctiiig caif iiiaiii shaft 'to a cii'ivcii clement o, serai-able. roiiricc driving ciccioni. ami

the liriitiri; flevices, bciwccri said primary iiiiaiii simili, ii timi l bro; ging tigo comi f Jvvccri said drivi clcnicn' and Smil iiiaiii Shaft, iiicaioc for inwrri'iilpattern shaft, drum to a part of said ki'iitii moans tlicrcfor, ii alle coiiroii i a priiimilv .I3 yoi'ii. siii-racc ziiirl N- ing said surfant@ iiicaiiss iiiciiidiiig a main pattern. Siipacc, operating me* i ooiitrollcci by said priii'iary iaiwcrii Surface foi. determining tho timos and (liiiaionof the iiiovciiiont oi Said kiiiiiiiig devices, an auxiliary patcrii iiiociiaiiisrii coiiiiirising a patieriii siirii'acc and means cooperating tlicreivililfor positioning caifi iiecilic con trolling devices, moans aci i i' vdrivii'ig moans; ico iiicriiiio;

steps iii cach revolution. of calci rcia'jy on A ment, and -means having ,a part in Contact with said primary pattern surface for rendering said auxiliary pattern advancing means active or inactive.

12. An independent needle knitting machine having needles and needle controlling devices7 and means for operating said devices comprising a pattern surface, and a ratchet mechanism for moving said pattern surface comprising a pawl, a cam rot/ating in time with a knitting element for advancing said pawl, said cam having active segments separated by dwells or idle segments, whereby the pattern surface may he advanced or held stationary in unison with relative movement of the needles and needle controlling eements of said machine through a predetermined angleof rotation.

13. In a pattern mechanism for knitting machines a primary pattern surface, a pattern surface and means for normally ad.--y

vancing said last mentioned surface under controlof said primary surface, a ratchet mechanism independent of said means for advancing said surface comprising a pawl, a cam rotating with an element of said machine, andmeans for driving said pawl therefrom, the said cam having active segments separatedby dwells or idle'segments, whereby the pattern surface may be advanced or held idle during predetermined angular movements of a rotary part of said machine, and means operated by said primary pattern surface for holding said pawl out oit-contact with its ratchet.

In testimony whereof, I have signed my name to this specification'in the presence of two subscribing witnesses.

\ ROBERT W. SCOTT- Witnesses:

MARY F. GRIFFIN, ROY C. SoU'rHwonTH. 

